Abstract:
PROBLEM TO BE SOLVED: To provide a data transmission method for reducing both round-trip latency and overhead in a communication system. SOLUTION: Data are arranged in one subframe in a wireless frame. The data contains a plurality of OFDM codes or single carrier FDMA codes. The two or more of codes have different code duration. The duration of the wireless frame and subframe are the same. The code contained in the subframe contains a plurality of subcarriers, and the plurality of the codes and subcarriers contained in the subframe are grouped into a resource block so that a carrier band width is divided into the integral number of resource blocks. In the duration of cyclic prefix of the two or more codes contained in the subframe, only one sample duration corresponding to the minimum carrier band width is different. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a digital wireless communication system for reduction of scheduling and ARQ delay. SOLUTION: An up-link transmission scheduling method includes a step for receiving scheduling information 402 from a mobile station 1014 with a base station 301, 303, and 304 in an active set. The scheduling information has at least one of the queue status and electrical power status of the mobile station. The method also includes a step for determining up-link channel scheduling assignment 418 with the base station in the active set by utilizing the scheduling information and at least any one of a base station interfrometer amount and link quality, which correspond to the mobile station. The method still further includes steps for transmitting up-link channel scheduling assignment 418 containing a maximum power margin target with the base station in the active set and for receiving a selection instruction 416 of the modulated encoding system of up-link transmission based on the maximum power margin target from the mobile station with the base station in the active set. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a wireless communication infrastructure entity in a wireless communication system implementing an uplink control channel using a narrow band frequency resource within a broad band frequency resource. SOLUTION: This entity 500 includes a controller 520 communicably coupled to a transceiver 510, wherein the controller 520 is configured to cause the transceiver 510 to signal a change of the location for an uplink control channel within the wide band frequency resource. The uplink control channel includes at least a pair of uplink control channels separated within the wide band frequency resource and accommodates to simultaneous uplink transmissions by a plurality of user apparatuses communicating in the wireless communication system. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a wireless communication infrastructure entity executing signaling of scheduling grant or allocation information in a wireless communication system, for instance, redundancy version, transport block size or both of them. SOLUTION: This wireless communication infrastructure entity includes a transceiver, and a controller communicably coupled to the transmitter. The controller is configured to generate parity bits based on scheduling grant information and to encode the parity bits based on additional scheduling grant information not used to generate the parity bits, wherein the encoded parity bits are combined with the scheduling grant information. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a wireless communication terminal that performs communication by a plurality of sub-carriers divided into a plurality of frequency bands, wherein each frequency band includes at least one sub-carrier. SOLUTION: The wireless communication terminal successively generates channel quality indicator (CQI) measurement information reports based on CQI measurements, wherein each report includes non-differential channel quality indicator measurement information for at least one of the frequency bands and differential channel quality indicator measurement information for all other frequency bands. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a digital wireless communication system that reduces scheduling and ARQ delay. SOLUTION: A method in which a mobile station 1014 transmits data includes a step wherein data is transmitted over a first reverse link channel 406, and a step wherein a corresponding available transport format and resource relative information (TFRI) for demodulating and decoding the transmission data are transmitted over a second reverse link channel 412. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a digital wireless communication system that reduces scheduling and ARQ delay. SOLUTION: A base station 301 schedules one mobile station 104 based upon scheduling information 402 and a link quality measure received from each mobile station 1014, and decodes first data received from the scheduled mobile station 1014. If the decoding ends in failure, the base station 301 rereceives data from the scheduled mobile station 1014 and puts the rereceived data together with previously received data to generate composite data. In this case, the generation of composite data is performed until the decoding of the composite data is successful or batch erasure of a hybrid automatic retransmission request (H-ARQ) buffer is performed. When decoding of one of the first data and composite data is successful, an acknowledgement signal is transmitted to the mobile station 1014 and batch erasure of the H-ARA is performed in response to the acknowledgement signal. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To solve a problem that a mechanism for a single resource allocation and a mechanism capable of allocating resources based on demands of each of user equipment are required in the case of a frame or a transmission time interval (TTI) constituted of a chain of sub-frames. SOLUTION: The present invention relates to a method in a wireless communication terminal (103) including receiving a plurality of sub-frames having time-frequency resource elements and resource allocation fields associated with a corresponding sub-frame, wherein the resource allocation fields indicate a resource assignment. In another embodiment, the terminal receives a radio frame comprising a plurality of sub-frames and a frequency diverse allocation field indicating frequency diverse resource allocations in multiple sub-frames of the radio frame. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a wireless communication terminal which communicates by a plurality of subcarriers which are divided into a plurality of frequency bands that include one or more subcarriers, respectively. SOLUTION: The wireless communication terminal measures a channel quality indicator (CQI) of a plurality of frequency bands (310), discriminates a subset of a frequency band whose channel quality indicator is measured (320), and transmits a report which discriminates a subset of a frequency band whose channel quality indicator is measured or transmits a report which discriminates a frequency band that is not included in the subset (330). In some embodiments, a subset CQI value related to a subset of frequency band is included in the report at least. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To cope with a requisite problem for a cyclic prefix whose length is variable in a mixed mode radio communication system. SOLUTION: A method in a radio communication network infrastructure entity (200) includes a process for transmitting a sequence of a plurality of symbols. One portion of the symbols is related to a first transmission mode, for example a point-to-point transmission mode. Another portion of the symbols is related to a second transmission mode that is different from the first one, for example a point-to-multipoint transmission mode. The method also comprises a process for converting the format of symbols related to the first transmission mode by using a first cyclic prefix before the process for transmitting the symbols, and a process for converting the format of symbols related to the second transmission mode by using a second cyclic prefix. In one embodiment, the continuation time of the cyclic prefix is different. COPYRIGHT: (C)2006,JPO&NCIPI